Crown Audio D-45 Stereo Amplifier User Manual
Contents
1. UNITED STATES amp CANADA est insurance closing costs and other finance charges less a reasonable depreciation on the product from the date of original purchase War ranty work can only be performed at our autho rized service centers or at the factory Warranty work for some products can only be performed at our factory We will remedy the defect and ship the product from the service center or our factory within a reasonable time after receipt of the defective product at our authorized service center Or our factory All expenses in remedying the defect including surface shipping costs in the United States will be borne by us You must bear the expense of shipping the product between any foreign country and the port of entry in the United States including the return ship ment and all taxes duties and other customs fees for such foreign shipments HOW TO OBTAIN WARRANTY SERVICE You must notify us of your need for warranty ser vice within the warranty period All components must be shipped in a factory pack which if needed may be obtained from us free of charge Corrective action will be taken within a reason able time of the date of receipt of the defective product by us or our authorized service center If the repairs made by us or our authorized service center are not satisfactory notify us or our autho rized service center immediately DISCLAIMER OF CONSEQUEN TIAL AND INCIDENTAL DAMAGES YOU ARE NOT ENTITLED2. consult an electrician for replacement of the ment such as preamplifiers or tape decks directly must accept any interference received including interference that may cause undesired obsolete outlet above or below the unit Because this amplifier has operation 10 Protect the power cord from being walked on a high power density it has a strong magnetic field or pinched particularly at plugs convenience which can induce hum into unshielded devices that receptacles and the point where they exit from are located nearby The field is strongest just above the apparatus and below the unit 11 Only use attachments accessories specified by the manufacturer CAUTION Changes or modifications not expressly approved by the party responsible for compliance could void the users authority to operate the equipment NOTE This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to part 15 of the FCC Rules These limits are designed to provide If an equipment rack is used we recommend locat reasonable protection against harmful interference in a residential installation This equip ing the amplifier s in the bottom of the rack and the page 2 12 13 14 15 Use only with a cart stand bracket or table specified by the manufacturer or sold with the apparatus When a cart is used use caution when moving the cart apparatus combination to avoid injury from tip over Unplug this appa
3. 16 ohm Bridge Mono SOW kHz Power refers to maximum average power in watts at 1 kHz with 0 1 THD Operation Manual CHANNEL 1 CHANNEL 2 40 ii 2 20 4 Logg 1 HEADPHONES LEVEL SIGNAL T l CHANNEL 1 6 TANNIN 52 40 7 es 20 A 2 HEADPHONES LEVEL SIGNAL 1 Welcome Reliability is the first thing you get with your purchase of a Crown power amplifier The D 45 and D 75A both deliver dependable operation with a wide variety of loads Because of their exceptional reliability these amplifiers have become the leading choice of professionals for use in recording studios laboratories and pub lic facilities You can even find them on the road Their sonic excellence also makes them a very good choice for your personal listening pleasure The D 45 and D 75A amplifiers are compact and provide ultra low distortion for medium power applications Crown s advanced AB B circuitry ensures efficient operation and pro tects against shorted open mismatched or low impedance loads that can affect any ampli fiers performance Modern power amplifiers are sophisticated pieces of engineering capable of producing extremely high power levels They must be treated with respect and correctly installed if they are to provide the many years of reliable service for which they were designed In addition D Series amplifiers include a num ber of features which require some explanation before they can be used to thei
4. A power switch and detented level controls are located on the front panel When you power up the amplifier remember that the unit does not have a turn on delay Each channel has its own level control which is used to adjust the desired output level Both level controls Figure 3 2 are used in dual mode but only the channel 1 control should be used in bridge mono mode Channel 2 control should be fully counter clockwise in bridge mono mode 3 5 Fuse Replacement The AC mains fuse is located on the back panel beside the power cord This fuse will not blow unless something is wrong Before replacing A A the units fuse you should be sure to fix the source of the problem If the problem is not immediately apparent the unit probably needs to be serviced by a qualified technician WARNING Always unplug the amplifier from the AC mains before removing the fuse To replace the fuse turn off the power switch and disconnect the power plug from the AC mains Unscrew the fuse holder cap shown in Figure 3 1 back view and remove the fuse Install appropriate fuse 100 or 120 volt mains 2 Amp type 3AG North American 200 220 and 240 volt mains 1 Amp type 3AG European 220 or 240 volt mains 1 Amp IEC type T time lag low breaking capacity Then simply resecure the fuse holder cap and reconnect the AC mains IMPORTANT Never install a fuse that has a higher current rating than the rec ommended value IMPORTANT The
5. in the extremely unlikely event of a device failure the amplifier will prevent fur ther damage The input stages are protected from overload damage by series resistors The unit also features a controlled slew rate and a V I limiter that protect the amplifier from high frequency RF blowups 4 2 Options 4 2 1 Bridge Mono Option Your amplifier is factory set for dual stereo operation As an option you may have the unit configured for higher power single channel bridge mono operation If you want the bridge mono modification take the unit to an autho rized Crown Service Center IMPORTANT Critical differences between dual and mono wiring are described in Section 2 6 2 4 2 2 Input Sensitivity Option The input sensitivity of your amplifier is fac tory set to 26 dB gain As an option the unit can be set to an input sensitivity of 0 775 volt by an authorized Crown Service center For most applications the amplifiers default setting of 26 dB gain will be ideal With this default setting full output power is achieved with an input signal of 0 632 volts for the D 45 and 0 837 volts for the D 75A some applications may require the gain struc ture to be calculated based on a sensitivity of 0 775 volts And although the 26 dB gain set ting provides a sensitivity for each amplifier that is very near 0 775 volts the 0 775 volt sensitivity setting is provided for applications that demand this sensitivity with a high leve
6. 2 crown Operation Manual D Series CHANNEL 1 CHANNEL 2 30 30 40 NL y 20 40 Wy 20 M 2 S E AR T ZAMEK a c lt s D 45 o S pa 10C 47 Y HEADPHONES LEVEL SIGNAL LEVEL CHANNEL 1 CHANNEL 2 40 wiy 20 40 yi 1 7 20 wig Wi D 75A E 30 sW crown 5 758 S S Z L IOC ll 4 o 0 HEADPHONES LEVEL SIGNAL LEVEL Obtaining Other Language Versions Jo obtain information in another language about the use of this product please contact your local Crown Distributor If you need assistance locating your local distributor please contact Crown at 574 294 8000 This manual does not include all of the details of design production or variations of the equipment Nor does it cover every possible situation which may arise during installation operation or maintenance The information provided in this manual was deemed accurate as of the publication date However updates to this information may have occurred To obtain the latest version of this manual please visit the Crown website at www crownaudio com Trademark Notice Crown Amcron and IOC are registered trademarks of Crown International Other trademarks are the property of their respective owners Some models may be exported under the name Amcron 2003 by Crown Audio Inc P O Box 1000 Elkhart Indiana 46515 1000 U S A Telephone 574 294 8000 125243 6 H A Harman International Company 2 03 D Series Power Amplifiers crown Importa
7. 200 220 and 240 VAC 10 50 to 400 Hz depending on the transformer configuration 120 VAC 60 Hz 100 120 200 220 and 240 VAC 10 50 to 400 Hz depending on the transformer configuration Power Draw at Idle 15 W or less 15 W or less Cooling Convection cooled through chassis and front panel Convection cooled through chassis and front panel Dimensions Width Height Depth 19 in 48 3 cm x 1 75 in 4 5 cm x 8 5 in 21 6 cm 19 in 48 3 cm x 1 75 in 4 5 cm x 8 5 in 21 6 cm Net Weight Shipping Weight 8 Ib 11 oz 3 9 kg 10 Ib 9 oz 5 1 kg 9 Ib 7 oz 4 3kg 11 Ib 4 oz 5 1 kg Operation Manual page 15 CrO D Series Power Amplifiers 6 Specifications Max Aver l Single Cycle Tone Burst 40 mS Tone Burst EIA Watts at FTC Continuous age Power at Watts at lt 0 05 THD Watts at lt 0 05 THD 1 THD See note 3 See note 4 See note 5 Configuration and Load average Power at 0 1 THD 0 1 THD ohm S See note 1 See note 2 1 kHz 50 Hz 50 Hz 1 kHz Dual both channels driven Bridge Mono balanced output Figure 6 1 D 45 Power Matrix Max Aver Single Cycle Tone Burst 40 mS Tone Burst EIA Watts at FTC Continuous age Power at d 0 0 Configuration and Load Average Power at0 1 THD 0 1 THD KSK LS e o a See note 5 ohms See note 1 See note 2 20Hz 20kHz 1 kHz 50 Hz 50 Hz 1 kHz Dual both channels driven Bridge Mono b
8. 3AG and IEC fuses are different physical sizes and require dif ferent holder caps The 3AG and IEC fuses should not be exchanged even though they are the same value D Series Power Amplifiers A 7 b CHANNEL 1 CHANNEL 2 A 7 ei E A A gt S IOC S LEVEL SIGNAL LEVEL Figure 3 2 Indicators and Level Controls Operation Manual D Series Power Amplifiers 4 Advanced Features and Options Operation Manual NOTE For detailed information about these Crown amplifier features please consult the Crown Amplifier Application Guide available on the Crown website at www crownaudio com 4 1 Protection Your amplifier is protected against all common hazards that plague high power amplifiers including shorted open or mismatched loads overloaded power supplies chain destruction phenomena input overload and high frequency blowups Protection against shorted and mismatched loads is provided by an instantaneous limiter that automatically limits current to the maxi mum safe value for the output transistors With a loudspeaker you can tell the amplifier has activated load protection because it causes audible distortion The noise might be com pared to crossover notch distortion or a snap ping sound depending on the load characteristics Loudspeaker systems with impedances of 4 ohms or higher should not activate the protection system All voltage amplification circuitry is designed to limit current So
9. 4 2 1995 Electrostatic Discharge Immunity Environment E2 Criteria B 4k V Contact 8k V Air Discharge EN 61000 4 3 1996 Radiated Radio Frequency Electromagnetic Immunity Environment E2 Criteria A EN 61000 4 4 1995 Electrical Fast Transient Burst Immunity Criteria B EN 61000 4 5 1995 Surge Immunity Criteria B EN 61000 4 6 1996 Immunity to Conducted Disturbances Induced by Radio Frequency Fields Criteria A EN 61000 4 11 1994 Voltage Dips Short Interruptions and Voltage Variation Safety Standard EN 60065 1998 Safety Requirements Audio Video and Similar Electronic Apparatus certify that the product identified above conforms to the requirements of the EMC Council Directive 89 336 EEC as amended by 92 31 EEC and the Low Voltage Directive 73 23 EES as amended by 93 68 EEC Signed ee s 3 Larry Coburn Title Senior Vice President of Manufacturing Operation Manual DUE TO LINE CURRENT HARMONICS WE RECOMMEND THAT YOU CONTACT YOUR SUPPLY AUTHORITY BEFORE CONNECTION page 3 Date of Issue January 1 2001 crown Table of Contents page 4 Important Safety Instructions Declaration Of Confom oso taska o GAGA ROM 1 Welcome 2 2 Install Your Amplifier uuu aaa aaa 2 3 Ensure Proper Cooling csser 2 4 Choose Input Wire and Connectors n 2 5 Choose Output Wire and Connectors oo cece cece 2 0 Wire Your Sys EM ans 2 6 1 Dual MORE nement 2 0 2 Bridge Mono Mod 2 221 CONMECEIO AC MANNS
10. American 120 VAC 60 Hz units have a standard three wire grounded AC plug as specified by UL requirements The 120 volt models and the European models have the appropriate plug The other 200 220 and 240 volt models have a North American 120 volt plug The installer must cut off the plug and supply and install a plug appropriate for the installation Note Crown assumes no liability whatsoever for ungrounded operation nor for violation of UL or local electrical codes 120 VAC 60 Hz North American units do not have a convertible transformer and cannot be used at other voltages and frequencies Interna tional units can be operated with an AC mains frequency of 50 to 400 Hz and can be config ured by an authorized Crown Service Center for five different line voltages 100 120 200 220 and 240 VAC The back panel sticker indicates the units factory configuration To alter your amplifiers AC mains voltage con figuration take the unit to an authorized Crown Service Center 2 8 Startup Procedure Use the following procedure when first turning on your amplifier 1 Turn down the level of your audio source 2 Turn down the Level controls of the ampli fier 3 Turn on the Power switch The Power indicator should glow 4 Turn up the level of your audio source to an optimum level 5 Turn up the Level controls on the amplifier until the desired loudness or power level is achieved 6 Turn down the level of your
11. BLANK Operation Manual page 23 CIOU H A Harman International Company
12. ON Before you begin make sure your amplifier is disconnected from the power source with the power switch in the off position and all level controls turned com pletely down counterclockwise Use a standard 19 inch 48 3 cm equipment rack EIA RS 310B See Figure 2 1 for amplifier dimen sions You may also stack amps without using a cabinet NOTE When transporting amplifiers should be supported at the front 22 86 cm m 9 0 in SIDE VIEW 8 375 in 21 273 cm Figure 2 1 D 45 and D 75A Dimensions D Series Power Amplifiers 2 3 Ensure Proper Cooling When using an equipment rack do not mount units directly on top of each other Allow some air space between units for convection cooling The side walls of the rack should be a minimum of two inches 5 1 cm away from the amplifier sides and the back of the rack should be a minimum of four inches 10 2 cm from the amplifier back panel Figure 2 2 illustrates D Series amplifier installation Figure 2 2 Installation Operation Manual D Series Power Amplifiers 2 Setup Operation Manual 2 4 Choose Input Wire and Connectors Figure 2 3 shows connector pin assignments for balanced wiring and Figure 2 4 shows connec tor pin assignments for unbalanced wiring NOTE Custom wiring should only be per formed by qualified personnel 2 5 Choose Output Wire and Connectors Crown recommends usi
13. ROM THE FACTORY YOUR AMPLIFIER IS CONFIGURED FOR DUAL OPERATION CHANNEL 2 CHANNEL 1 D 75A D 45 AMPLIFIER CHANNEL 2 CHANNEL 1 LOUDSPEAKER LOUDSPEAKER A Do not wire the amplifier in bridge mono BRIDGE MONO MODE mode without having it modified by an LIEN AN authorized Crown Service Center DO NOT DO NOT CHANNEL 1 USE USE D 75A D 45 AMPLIFIER CONNECT THE LOAD ACROSS THE POSITIVE OUTPUT TERMINALS FOR PROPER POLARITY CONNECT THE CHANNEL 1 OUTPUT TO THE POSITIVE LOUDSPEAKER LEAD Operation Manual D Series Power Amplifiers 2 Setup Operation Manual 2 7 Connect to AC Mains Connect your amplifier to the AC mains power source power outlet with the supplied AC power cordset WARNING The third prong of this con nector ground is an important safety feature Do not attempt to disable this ground connection by using an adapter or other methods Amplifiers don t create energy The AC mains voltage and current must be sufficient to deliver the power you expect You must operate your amplifier from an AC mains power source with not more than a 10 variation above or a 15 variation below the amplifiers specified line voltage and within the specfied frequency requirements indicated on the amplifiers back panel label If you are unsure of the output voltage of your AC mains please consult your electrician 2 7 1 AC Mains Voltage Configura tion North
14. TO RECOVER FROM US ANY INCIDENTAL DAMAGES RESULTING D Series Power Amplifiers FROM ANY DEFECT IN THE NEW CROWN PROD UCT THIS INCLUDES ANY DAMAGE TO ANOTHER PRODUCT OR PRODUCTS RESULTING FROM SUCH A DEFECT SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATIONS OF INCIDEN TAL OR CONSEQUENTIAL DAMAGES SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY TO YOU WARRANTY ALTERATIONS No person has the authority to enlarge amend or modify this Crown Warranty This Crown Warranty is not extended by the length of time which you are deprived of the use of the new Crown product Repairs and replacement parts provided under the terms of this Crown Warranty shall carry only the unexpired portion of this Crown Warranty DESIGN CHANGES We reserve the right to change the design of any product from time to time without notice and with no obligation to make corresponding changes in products previously manufactured LEGAL REMEDIES OF PURCHASER THIS CROWN WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS YOU MAY ALSO HAVE OTHER RIGHTS WHICH VARY FROM STATE TO STATE No action to enforce this Crown Warranty shall be com menced after expiration of the warranty period THIS STATEMENT OF WARRANTY SUPERSEDES ANY OTHERS CONTAINED IN THIS MANUAL FOR CROWN PRODUCTS 12 01 Operation Manual D Series Power Amplifiers crown 8 Warrant y WORLDWIDE EXCEPT USA amp CANADA Operation Manual SUMMARY OF WARRANTY Crown International 1718 We
15. alanced output Figure 6 2 D 75A Power Matrix Notes All power matrix specifications are based on a 0 1 regulated 120 VAC 60 Hz power mains and an ambient room temperature of 70 F 21 C 1 Continuous power in the context of Federal Trade Commission testing is understood to be a minimum of five minutes of operation Harmonic distortion is measured at the RMS sum total as a percentage of the fundamental output voltage This applies for all wattages greater than 0 25 watts 2 A1 kHz sine wave is presented to the amplifier and the output monitored for nonlinear distortion The level is increased until the THD reaches 0 1 At this level the average power per channel is reported 3 Asingle cycle sine wave is presented to the amplifier and monitored for nonlinear distortion The average power during the burst is reported Loudspeakers must be able to withstand this level if they are to be safely used with this amplifier 4 A 40 millisecond burst or a two cycle sine wave whichever is of greater duration is used and the power computed as the average power during the burst The duty cycle of this test is 10 percent This power level is a measure of how loud an amplifier is as perceived by the human ear 5 EIA standard RS 490 both channels driven page 16 Operation Manual D Series Power Amplifiers 7 Service Operation Manual Crown amplifiers are quality units that rarely require servicing Before returning your unit for servicin
16. audio source to its normal range If you ever need to make any wiring or installa tion changes don t forget to disconnect the power cord For help with determining your systems opti mum gain structure signal levels please refer to the Crown Amplifier Application Guide available online at www crownaudio com crown page 9 crown 3 Operation page 10 3 1 Precautions Your amplifier is protected from internal and exter nal faults but you should still take the following precautions for optimum performance and safety 1 4 Before use your amplifier first must be config ured for proper operation including input and output wiring hookup Improper wiring can result in serious operating difficulties For information on wiring and configuration please consult the Setup section of this manual or for advanced setup techniques consult Crown s Amplifier Application Guide available online at www crownaudio com Use care when making connections selecting Signal sources and controlling the output level The load you save may be your own Do not short the ground lead of an output cable to the input signal ground This may forma ground loop and cause oscillations WARNING Headphone jack supplies full output voltage Always turn level down full CCW before listening through headphones otherwise headphone or hearing damage may result 5 WARNING Never connect the output to a power supply battery or p
17. ctory ship it in an original factory packing container If you don t have the original carton you may obtain a product service foam in place shipping pack from the Crown Factory service Department at the number listed below For non warranty service you may also pro vide your own shipping pack however we still recommend using a Crown Supplied Shipping crown Container Minimum recommended require ments for materials are as follows 275 P S I burst test Double Wall carton that allows for 2 inch solid Styrofoam on all six sides of unit or 3 inches of plastic bubble wrap on all six sides of unit securely seal the package with an ade quate carton sealing tape Do not use light boxes or peanuts Damage caused by poor packing cannot be covered under warranty 4 Do not ship the unit in any kind of cabinet wood or metal Ignoring this warning may result in extensive damage to the unit and the cabinet Accessories are not needed do not send the product documentation cables and other hardware If you have any questions please contact Crown Factory Service Crown Factory Service 1718 W Mishawaka Rd Elkhart Indiana 46517 U S A Telephone 574 294 8200 800 342 6939 North America Puerto Rico and Virgin Islands only Facsimile 574 294 8301 Technical Support 574 294 8124 Factory Service Internet htto www crownaudio com page 17 crown 8 Warranty page 18 SUMMARY OF WARRANTY Cr
18. e of the loads is shorted CONDITION No input signal Signal indicator is not flashing even though audio is applied POSSIBLE REASON e Input signal level is very low e Level controls are turned down Operation Manual D Series Power Amplifiers 6 Specifications Minimum Guaranteed Power crown 120V 60 Hz Units Dual mode per channel both channels driven 1 kHz with 0 1 THD 4 ohms 35W 55W 8 ohms 25W 40W 16 ohms 20W 25W 120V 60 Hz Units Bridge mono mode 1 kHz with 0 1 THD 8 ohms 70W 110W 16 ohms 50W 80W Performance D 45 D 75A Frequency Response at 1 watt 20Hz 20 kHz 0 1 dB 0 1 dB Phase Response at 1 watt 20Hz 20 kHz 10 to 15 10 to 15 Signal to Noise Ratio below rated power 20 Hz to 20 kHz 106 dB unweighted 106 dB unweighted Total Harmonic Distortion THD at 1 watt from 20 Hz to 20 kHz lt 0 05 lt 0 05 Intermodulation Distortion IMD 60 Hz and 7 kHz at 4 1 A from 25 watts to full bandwidth power R ne Damping Factor DC to 400 Hz gt 400 gt 400 Crosstalk below rated power 100 Hz to 1 kHz gt 100 dB gt 100 dB Input Impedance nominally balanced nominally unbalanced 20 kilohms 10 kilohms 20 kilohms 10 kilohms Load Impedance Note Safe with all types of loads stereo Bridge Mono 4 16 ohms 8 16 ohms 4 16 ohms 8 16 ohms Required AC Mains North American units International units 120 VAC 60 Hz 100 120
19. ed for higher power single channel bridge mono mode by an authorized Crown Service Center To prevent damage to the amplifier do not operate the unit in bridge mono mode without the Service Center modification Typical input and output wiring is shown in Figure 2 7 INPUTS Connect input wiring only to CH 1 OUTPUTS Connect the speaker across the positive output terminals Do not use the negative terminals when the ampli fier is being operated in Bridge Mono mode NOTE Crown provides a reference of wiring pin assign ments for commonly used connector types in the Crown Amplifier Application Guide available at www crownau dio com NOTE When operating in Bridge Mono mode turn down full CCW the CH 2 level control The CH 1 level control works both channels If your loudspeakers don t need the additional volt age and you only have one input signal to drive mul tiple loudspeakers you can use bridge mono mode without actually bridging the outputs Bridge mono mode is like dual mode except the channel 1 input feeds both outputs and the channel 2 output is inverted To use bridge mono mode without bridging the outputs wire your loudspeakers as you would for dual mode but invert the polarity of the channel 2 output wiring positive goes to negative and negative goes to positive Figure 2 6 System Wiring for Dual Mode Figure 2 7 System Wiring for Bridge Mono Mode D Series Power Amplifiers DUAL MODE TTA MW F
20. ed from the Crown website at www crownaudio com or by calling Crown Customer Service 7 2 2 Factory Service To obtain factory service fill out the service infor mation page found in the back of this manual and send it along with your proof of purchase and the defective unit to the Crown factory For warranty service we will pay for ground ship ping both ways in the United States Contact Crown Customer Service to obtain prepaid shipping labels prior to sending the unit Or if you prefer you may prepay the cost of shipping and Crown will reim burse you Send copies of the shipping receipts to Crown to receive reimbursement Your repaired unit will be returned via UPS ground Please contact us if other arrangements are required 7 2 3 Factory Service Shipping Instructions 1 Before sending a Crown product to the factory for service first call the Crown Service Depart ment for a return authorization RA number 2 Besure to fill out the service information form that follows and enclose it with your shipment either inside the box or in a packing slip enve lope securely attached to the outside of the shipping carton Do not send the service infor mation form separately If you are sending the unit from a Shipping Center we recommend taping the form to the product We also recom mend recording the serial number and model before shipping for your reference 3 To ensure the safe transportation of your unit to the fa
21. g please contact Crown Technical Support to verify the need for servicing This unit has very sophisticated circuitry which should only be serviced by a fully trained techni cian This is one reason why each unit bears the fol lowing label CAUTION To prevent electric shock do not remove covers No user serviceable parts inside Refer servicing to a qualified techni cian 7 1 Worldwide Service Service may be obtained from an authorized service center Contact your local Crown Amcron repre sentative or our office for a list of authorized service centers To obtain service simply present the bill of sale as proof of purchase along with the defective unit to an authorized service center They will handle the necessary paperwork and repair Remember to transport your unit in the original fac tory pack 7 2 US and Canada Service service may be obtained in one of two ways from an authorized service center or from the factory You may choose either It is important that you have your copy of the bill of sale as your proof of purchase 7 2 1 Service at a US or Canada Ser vice Center This method usually saves the most time and effort simply present your bill of sale along with the defective unit to an authorized service center to obtain service They will handle the necessary paperwork and repair Remember to transport the unit in the original factory pack A list of authorized service centers in your area can be obtain
22. l of precision A Crown Service Center can activate the 0 775 volt input sensitivity without voiding the war ranty croun page 13 Crouwri 5 Troubleshooting CONDITION Power indicator is off ioc POSSIBLE REASON POWER SIGNAL e The amplifier has lost AC power e The amplifiers Power switch is off e The amplifier is not plugged into the power receptacle e The amplifier output level is so high that the power supply fuse has blown Verify that input levels and output impedances are within safe ranges Refer the unit to an authorized Grown service center for fuse replacement CONDITION Distorted sound 66 POSSIBLE REASON SIGNAL e Load is wired incorrectly e nput signal level is too high Turn down your amplifier level controls or turn down the input signal until the clip light goes out Note If the signal sounds distorted even though the Clip LED is off the input signal is distorted Check gain staging and output lev els of the mixer or preamp page 14 IOC SIGNAL SIGNAL Tu SIGNAL D Series Power Amplifiers CONDITION No sound even though the amp has power Power LED is on and the amp is receiving an input signal Signal indicator is flashing POSSIBLE REASON e Speakers not connected e Open circuit due to speaker failure There is a short on the amplifier output First disconnect your speakers from the affected channel s one by one to determine if on
23. lifier It does not cover every aspect of installation setup or operation that might occur under every condition For addi tional information please consult Crown s Amplifier Application Guide available online at www crownaudio com Crown Technical Sup port your system installer or retailer We strongly recommend you read all instruc tions warnings and cautions contained in this manual Also for your protection please send in your warranty registration card today And save your bill of sale its your official proof of purchase page 5 crown 2 Setup page 6 2 1 Unpack Your Amplifier Please unpack and inspect your amplifier for any damage that may have occurred during transit If damage is found notify the transportation company immediately Only you can initiate a claim for ship ping damage Crown will be happy to help as needed Save the shipping carton as evidence of damage for the shipper s inspection We also recommend that you save all packing mate rials So you will have them if you ever need to trans port the unit Never ship the unit without the factory pack YOU WILL NEED not supplied e Input wiring cables e Output wiring cables Rack for mounting amplifier or a stable surface for stacking WARNING Before you start to set up your amplifier make sure you read and observe the Important Safety Instructions found at the beginning of this manual 2 2 Install Your Amplifier CAUTI
24. ms of this Crown Warranty shall carry only the unexpired portion of this Crown Warranty DESIGN CHANGES We reserve the right to change the design of any product from time to time without notice and with no obligation to make corresponding changes in products previously manufactured LEGAL REMEDIES OF PURCHASER No action to enforce this Crown Warranty shall be commenced after expiration of the warranty period THIS STATEMENT OF WARRANTY SUPERSEDES ANY OTHERS CONTAINED IN THIS MANUAL FOR CROWN PRODUCTS 7 01 CrO D Series Power Amplifiers NOTES page 20 Operation Manual D Series Power Amplifiers Crow Crown Factory Service Information Shipping Address Crown Factory Service 1718 W Mishawaka Rd Elkhart IN 46517 Phone 1 800 342 6939 or 1 574 294 8200 Fax 1 574 294 8124 Owner s Name Shipping Address Phone Number Fax Number oo n NATURE OF PROBLEM Be sure to describe the conditions that existed when the problem occurred and what attempts were made to correct it Other equipment in system If warranty has expired payment will be Cash Check Cl Visa CI MasterCard O C 0 D CI Purchase Order for Crown Dealer Card Number Exp Date Signature ENCLOSE THIS PORTION WITH THE UNIT DO NOT MAIL SEPARATELY Operation Manual page 21 CrO D Series Power Amplifiers THIS PAGE INTENTIONALLY LEFT BLANK page 22 Operation Manual D Series Power Amplifiers c I COLISIR THIS PAGE INTENTIONALLY LEFT
25. ng professionally con structed high quality two or four conductor heavy gauge speaker wire and connectors You may use ter minal forks or bare wire for your output connec tors See Figure 2 5 To prevent the possibility of short circuits wrap or otherwise insulate exposed loudspeaker cable and connectors Using the guidelines below select the appropri ate size of wire based on the distance from amplifier to speaker Distance Wire Size up to 25 ft 16 AWG 26 40 ft 14 AWG 41 60 ft 12 AWG Over 60 ft 10 AWG CAUTION Never use shielded cable for output wiring BALANCED UNBALANCED INPUT SOURCE cel SHIELD SHIELD_ SHIELD Figure 2 3 Balanced Input Connector Wiring Figure 2 4 Unbalanced Input Connector Wiring OREO Figure 2 5 Output Connector Wiring crown page crown 2 Setup page 8 2 6 Wire Your System 2 6 1 Dual Mode Typical input and output wiring is shown in Figure 2 6 INPUTS Connect input wiring for each channel OUTPUTS Maintain proper polarity on output connec tors Connect Channel 1 positive speaker load to Channel 1 positive terminal of amp repeat for negative Repeat each channel wiring as for Channel 1 Refer to Section 2 5 for out put connector pin assignments 2 6 2 Bridge Mono Mode Your amplifier is factory configured for dual stereo opera tion As an option the unit can be configur
26. nt Safety Instructions 1 Read these instructions TO PREVENT ELECTRIC SHOCK DO NOT REMOVE CAUTION 2 Keep these instructions TOP OR BOTTOM COVERS NO USER SERVICE 3 Heed all warnings ABLE PARTS INSIDE REFER SERVICING TO RISK oo cn 52 4 Follow all instructions QUALIFIED SERVICE PERSONNEL 5 Do not use this apparatus near water PR VENIR LE CHOC LECTRIQUE N ENLEVEZ O NULL PAS LES COUVERCLES IL N Y PAS DES PAR AVIS 7 Do not block any ventilation openings Install TIES SERVICEABLE L INT RIEUR TOUS REPA RISQUE DE CHOC LECTRIQUE in accordance with the manufacturer s instruc RATIONS DOIT ETRE FAIRE PAR PERSONNEL N OUVREZ PAS tions QUALIFIE SEULMENT 8 Do not install near any heat sources such as radiators heat registers stoves or other apparatus that produce heat IMPORTANT 9 Do not defeat the safety purpose of the polar ized or grounding type plug A polarized plug has two blades with one wider than the other A grounding type plug has two blades and a third grounding prong The wide blade or the third prong is provided for your safety If the D Series amplifiers require Class 2 output wiring MAGNETIC FIELD FCC COMPLIANCE NOTICE E er This device complies with part 15 of the FCC rules Operation is subject to the following provided plug does not fit into your outlet CAUTION Do not locate sensitive high gain equip two conditions 1 This device may not cause harmful interference and 2 this device
27. oi aan s output levels distortion exceeds 0 05 output levels P m T afrad CHANNEL 2 H OFF ON 40 NA Z 20 S a 40 ZZ 20 I G IU AU Crown 75A 77 e 0 0 HEADPHONES LEVEL SIGNAL LEVEL Power cord Barrier block output Channel 1 combination Po a XLR phone input connector REMPLACER C ro UJ n INTERNATIONAL INC SEULMENT a 2 INPUTS XLR WIRING ELECTRONIC EQUIPMENT A AA AA AA UG Nai RUA IN 40517 0000 Do AL T 000000 6 A N ff D ee ea SERIAL NUMBER PHONE WIRING W j Ww MODEL M AMPS M ch 2 chet N A IMPORTANT d TIP ACVOLTS NS 50 400 Hz OUTPUTS d IN MONO MODE USE eT AM RING GND SLEEVE MAX POWER IN Watts g R i ch a U S PATENT NO 3 493 879 THE CH 1 INPUT ONLY e7 Fuse holder Figure 3 1 Front and Back Views Operation Manual page 11 crown 3 Operation page 12 3 3 Indicators Your amplifier has five front panel indicators First a power indicator behind the front panel becomes visible when the unit is turned on and has power A signal indicator for each channel Figure 3 2 flashes when there is output from the amplifier The IOC Input Output Compara tor indicators work like sensitive distortion meters and flash when the amplifier causes any distortion of 0 05 or more The IOC indica tors typically glow for about one minute after the AC power is turned off 3 4 Controls
28. oi alan AAAA 2 7 1 AC Mains Voltage Configuration 1 2 8 Startup Procedure usansasan asa san aa nan aniaiananaianani 3 Operation 3 1 Precautions D Series Power Amplifiers 3 2 Controls Indicators and Connectors s 11 32 INA Lo saseta AE 12 O AOLO ns neue 12 35 FUSE Replacement srona AAAA 12 4 Advanced Features and Options 1 13 AV PIECON wos oaso owo iaa owada AAA 13 COS a 13 4 2 1 Bridge Mono Option o s 13 4 2 2 Input Sensitivity Option oo ccc cece tees 13 5 Troubleshooting 14 6 Specifications aac c i Goko 15 I SENICE wa ccwiw cwcccwica cia wii 17 7 1 Worldwide Service oo ce ccceceeestesteseesestesteseesesseeneseeneenen 17 1 2 Wve Canada SOL VICE dan 17 7 2 1 Service at a US or Canada Service Center 17 1 2 2 Factory Service ae msn 17 7 2 3 Factory Service Shipping Instructions 17 8 Warranty eee nee mmmnseesns 18 Crown Factory Service Information Form n 21 Operation Manual D Series Power Amplifiers D 45 Power 4 ohm Dual per channel 35W 8 ohm Dual per channel 25W 16 ohm Dual per channel 20W 8 ohm Bridge Mono 70W 16 ohm Bridge Mono 50W 1 kHz Power refers to maximum average power in watts at 1 kHz with 0 1 THD D a 15A pa 4 ohm Dual per channel 55W 8 ohm Dual per channel 40W 16 ohm Dual per channel 25W 8 ohm Bridge Mono 110W
29. other encumbrances The refund will be equal to the actual purchase price not including inter est insurance closing costs and other finance charges less a reasonable depreciation on the product from the date of original purchase War ranty work can only be performed at our autho rized service centers We will remedy the defect and ship the product from the service center within a reasonable time after receipt of the defec tive product at our authorized service center HOW TO OBTAIN WARRANTY SERVICE You must notify your local Crown importer of your need for warranty service within the warranty period All components must be shipped in the original box Corrective action will be taken within a reasonable time of the date of receipt of the defective product by our authorized service center If the repairs made by our authorized service cen ter are not satisfactory notify our authorized ser vice center immediately DISCLAIMER OF CONSEQUENTIAL AND INCIDENTAL DAMAGES YOU ARE NOT ENTITLED TO RECOVER FROM US ANY INCIDENTAL DAMAGES RESULTING FROM ANY DEFECT IN THE NEW CROWN PRODUCT THIS INCLUDES ANY DAMAGE TO ANOTHER PRODUCT OR PRODUCTS RESULTING FROM SUCH A DEFECT WARRANTY ALTERATIONS No person has the authority to enlarge amend or modify this Crown Warranty This Crown Warranty is not extended by the length of time which you are deprived of the use of the new Crown product Repairs and replacement parts provided under the ter
30. ower main Electrical shock may result 6 Tampering with the circuitry or making unau thorized circuit changes may be hazardous and invalidates all agency listings 7 Do not operate the amplifier with the IOC LEDs constantly flashing 8 Do not overdrive the mixer which will cause clipped signal to be sent to the amplifier Such signals will be reproduced with extreme accu racy and loudspeaker damage may result 9 Do not operate the amplifier with less than the rated load impedance Due to the amplifier s output protection such a configuration may result in premature clipping and speaker dam age Remember Crown is not liable for damage that results from overdriving other system components D Series Power Amplifiers Operation Manual D Series Power Amplifiers Crow 3 Operation 3 2 Controls Indicators and Con WARNING HEADPHONE JACK nectors SUPPLIES FULL OUTPUT POWER AND Figure Figure 3 1 shows the controls indica MAY DAMAGE HEADPHONES OR tors and connectors on the front panel and back CAUSE HEARING DAMAGE panel of the D 75A The D 45 layout is similar This standard This indicator flashes stereo phone jack synchronously with the is used to connect Channel 1 output to headphones or show signal presence DAE This knob controls This IOC indicator This knob controls AR the Channel 1 and for Channel 1 flashes the Channel 2 and ae ak a aoe left headphone if any kind of amplifier right headphone indha o
31. own International 1718 West Mishawaka Road Elkhart Indiana 46517 4095 U S A warrants to you the ORIGINAL PURCHASER and ANY SUB SEQUENT OWNER of each NEW Crown product for a period of three 3 years from the date of purchase by the original purchaser the warranty period that the new Crown product is free of defects in materials and workmanship We further warrant the new Crown product regardless of the reason for failure except as excluded in this War ranty ITEMS EXCLUDED FROM THIS CROWN WARRANTY This Crown Warranty is in effect only for failure of a new Crown product which occurred within the Warranty Period It does not cover any product which has been damaged because of any inten tional misuse accident negligence or loss which is covered under any of your insurance contracts This Crown Warranty also does not extend to the new Crown product if the serial number has been defaced altered or removed WHAT THE WARRANTOR WILL DO We will remedy any defect regardless of the rea son for failure except as excluded by repair replacement or refund We may not elect refund unless you agree or unless we are unable to pro vide replacement and repair is not practical or cannot be timely made If a refund is elected then you must make the defective or malfunctioning product available to us free and clear of all liens or other encumbrances The refund will be equal to the actual purchase price not including inter
32. r maximum advantage 30 40 Sy D 20 A a U LEVEL 30 40 Sy 2 20 RE 3 A I A LEVEL Crown O 4 5 croun DSA Please take the time to study this manual so that you can obtain the best possible service from your amplifier 1 1 Features Your dual channel stereo amplifier can optionally be configured to deliver double the power from a single mono channel It also provides the following features e Powerful AB B class circuitry yields maxi mum efficiency with minimum crossover notch distortion 0c Input Output Comparator alerts of any distortion that exceeds 0 05 to pro vide proof of distortion free performance e Signal presence indicators verify the pres ence of amplifier output e Detented level controls for precise repeat ability e Ultra low harmonic and intermodulation distortion result in the best dynamic trans fer function in the industry e Very low noise and wide dynamic range e High damping factor provides exceptional loudspeaker motion control e Convection cooling system eliminates fan noise and maintenance e Mounts ina standard 19 inch 48 3 cm rack e Front panel headphone jack e Three Year No Fault Fully Transferable Warranty completely protects your invest ment and guarantees its specifications 1 2 How to Use This Manual This manual provides you with the necessary information to safely and correctly setup and operate your amp
33. ratus during lightning storms or when unused for long periods of time Refer all servicing to qualified service person nel Servicing is required when the apparatus has been damaged in any way such as power supply cord or plug is damaged liquid has been spilled or objects have fallen into the apparatus the apparatus has been exposed to rain or moisture does not operate normally or has been dropped To reduce the risk of fire or electric shock do not expose this apparatus to rain or moisture preamplifier or other sensitive equipment at the top WATCH FOR THESE SYMBOLS The lightning bolt triangle is used to alert the user to the risk of electric shock The exclamation point triangle is used to alert the user to important operating or maintenance instruc tions ment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the operation manual may cause harmful interference to radio commu nications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television recep tion which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures e Reorient or relocate the receiving antenna e Increase the separation between the equipment and receiver e Connect the equipment into an ou
34. st Mishawaka Road Elkhart Indiana 46517 4095 U S A warrants to you the ORIGINAL PURCHASER and ANY SUB SEQUENT OWNER of each NEW Crown1 product for a period of three 3 years from the date of pur chase by the original purchaser the warranty period that the new Crown product is free of defects in materials and workmanship and we further warrant the new Crown product regardless of the reason for failure except as excluded in this Warranty 1 Note If your unit bears the name Amcron please substitute it for the name Crown in this warranty ITEMS EXCLUDED FROM THIS CROWN WARRANTY This Crown Warranty is in effect only for failure of a new Crown product which occurred within the Warranty Period It does not cover any product which has been damaged because of any inten tional misuse accident negligence or loss which is covered under any of your insurance contracts This Crown Warranty also does not extend to the new Crown product if the serial number has been defaced altered or removed WHAT THE WARRANTOR WILL DO We will remedy any defect regardless of the rea son for failure except as excluded by repair replacement or refund We may not elect refund unless you agree or unless we are unable to pro vide replacement and repair is not practical or cannot be timely made If a refund is elected then you must make the defective or malfunctioning product available to us free and clear of all liens or
35. tlet on a circuit different from that to which the receiver is connected e Consult the dealer or an experienced radio TV technician for help Operation Manual D Series Power Amplifiers Crouri Crown International Inc DECLARATION of CONFORMITY Issued By Crown International Inc Sue Whitfield 1718 W Mishawaka Road 9 4 294 8289 Elkhart Indiana 46517 U S A swhitfield crownintl com European Representative s Name and Address Nick Owen 19 Clos Nant Coslech Pontprennau Cardiff CF23 8ND United Kingdom Equipment Type Commercial Audio Power Amplifiers Family Name D Family Model Names D 45 D 75A EMC Standards EN 55103 1 1995 Electromagnetic Compatibility Product Family Standard for Audio Video Audio Visual and Entertainment Lighting Control Apparatus for Professional Use Part 1 Emissions EN 55103 1 1995 Magnetic Field Emissions Annex A 10 cm and 1 M EN 61000 3 2 1995 A14 2000 Limits for Harmonic Current Emissions equipment input current 16A per phase EN 61000 3 3 1995 Limitation of Voltage Fluctuations and Flicker in Low Voltage Supply Systems Rated Current 16A EN 55022 1992 A1 1995 amp A2 1997 Limits and Methods of Measurement of Radio Disturbance Characteristics of ITE Radiated Class B Limits Conducted Class B EN 55103 2 1996 Electromagnetic Compatibility Product Family Standard for Audio Video Audio Visual and Entertainment Lighting Control Apparatus for Professional Use Part 2 Immunity EN 61000
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